Rectangular lamp



FIG. 1 is a side view of my rectangular lamp;

FIG. 2 is a bottom plan view of my rectangular lamp;

FIG. 3 is another side view of my rectangular lamp;

FIG. 4 is a top plan view of my rectangular lamp;

FIG. 5 is an end view of my rectangular lamp;

FIG. 6 is another end view of my rectangular lamp; and,

FIG. 7 is a perspective top view of my rectangular lamp. 

The ornamental design for a rectangular lamp, as shown and described. 